Coffee infusion preparing machine with hydrocompressor



E. SALATI COFFEE INFUSION PREPARING MACHINE WITH HYDROCOMPRESSOR Filed April l1. 1957 3 Sheets-Sheet 1 ffll In vento/1 Dod'cr @Y EM fano gal otH E. SALATI COFFEE INFUSION PREPARING MACHINE WITH HYDROCOMPRESSOR Filed April l1, 1957 3 Sheets-Shet 2 um 5.11410 Salm: BY

Inventor S. Smm

Feb. 16, 1960 E. sALATl 2,925,027

COFFEE INFUSION PREPARING MACHINE WITH HYDROCOMPRESSOR Filed April 11. 1957 s sheets-sheet :s

In uenor' United. Staates Patent COFFEE nvFUsroNrnEPARmG wml HYDnocoMPREssoR p "Emidio slan,Mnan,1taly Y Application April 11,' 19s1, staar No. 652,144

claims priority, application Italy apra 23, 1956 y Y 6 claims. (cl. 994302) Y, Y,

t 2,925,027V 4 Patented Feb. 16,

ice

resistance in case of breaking or damaging of the same, or in case of a dilfereut feeding voltage of the line..-

Under the electric resistance there is foreseen 'a con. cave mirror, the purpose of which is to reect the: thermic irradiations that are dispersed from the resistance against the lower portion of the boiler. The resistance bears in its central portion the plug into which the terminals are inserted. The aforesaid mirror is supported by springs that consent an elastic movement of the mirror in order to facilitate the assembling of the boiler, by mastering the strength opposed by the resistance, that thusv follows the mirror during its elastic movements con-I sented by the springs. Y

Still another characteristic of the invention is given by the kinematism that controls thernovement of the piston within'the group of Vcompression ofthe water.

l" Said kinematism is composed of two small shafts or group being controlled by akinematism that requires a limited strength onto the controlling lever.

Another object of this invention is to particularly providefor a complete and quick disassembling of all elements composing the part directly interested with the preparation of the coffee infusion, so as to render the accessibility to such elements easy in order to consent theintegra'l cleaning of such elements, with the possibility to take away Yall colee powder residue that usually remain deposited onl Ysuch elements, therein causing putridemanations due to quick'rotting that provoke damaging of the successive infusions4 causing them to be disagreeable and prejudicial to the users. A furtherrobject of the invention is that to obtain a coffee infusion preparing machine that, although of small sizes, as those for domestic uses, yresults perfectly stable, particularly during the handling of the lever provided for the compression of thehot water through the coieev powder, such as said lever may be controlled with a limited strength onto it.

#A frstcharacteristic of the invention is ensured by the provision of a broiler of convenient shape, connected to the foot part of the colfee machine by means ofjassembling means that may be easily disassembled, thus consenting the taking away ofY the boiler, Aand of all elements connectedv to it,v therein alsocompnsed the cylinder for .the compression of the hot water with all elements of which it is composed or to be connected to it.` Said -boiler is closed at its upper portion by means of a cover held in place bya disengageable piston rods, one of which'is hinged on the upper cover of the cylinder, and the other on the piston. The free: ends of said piston rods are hinged on an intermediateI small lever preferablyrconstituted by two spherical cups or by two circular plates, the radius of which is a little. less large as the internal radius of the cylinder; said cupsor plates being disposed at a certain reciprocal distance in order to consent the engagement therethrough of said small piston rods. The displacement of the cylinder occurs by controlling a two arm lever that acts onto the `arm constituted by two spherical cups fthus -inducing them into rotation, said lever being engaged .with said two cupsby means of two square bolts located in opposed position and engaging into seatings of squarel transversal cut, worked in the central portion of the aforesaid cups or plates, the whole intended so as a limited pressure exerted onto the free end of the lever to be transformedrinto a considerable throw onto the p piston,rthis` beingV due to the remarkable length diler#y notch through 'a` lever of special make and rotatable t.;

around abolt such as to consent the accessibility within the boiler for the cleaning operations. 1 Another characteristic of this invention is the simple disassembling of all elements, d isposedrwithin the'cylinder, the ksame being made free by the simple opening of therupper portion cover. t Y

A still further characteristic of this invention `is the locationand'quick taking away of the heating electric resistance. 4Such device, duly protected and of triangular'shape,V of which trianglea face, is turneclupwards,I

is Wound; in such manner as ,to ensure an eilectiveposience of the two arms constituting said twoarm lever, and to the distance of the articulation axle of last in regard to the rotatingbolt of the cup on which the pis-Y ton rod is hinged.` These and other objects and characteristics of the invention will' be better understood by reading the hereinafter reported detailed specification, and looking to the herewith enclosed drawings of illustration, wherein there is explained and shown respectively a non limitative example of embodiment of the invention itself.i

l Of said drawings: Figure 1` is a vview of the coffee infusion preparing machine, partly shown in section along a medium plane ofthe same; p p v I FigureZ is an axial'cut in larger scale ofthe hydrocompression group; 'y 1 l '5 Figure 4v`is a section along line `B-f-B of Figure 1; 4 'Figure 5 is a perspectiveview of the kinematism fr controlling the piston, and Y j l Figure 3 is a section along line A;A of Figure f1; Figure 6.is a view from the outside of the'rnachinein its. main parts after, disassembling of `the foot, part Vand:

:the group ofa'ctive'organs of the machine itself. i l

4 j cfa strong foot part 1 obtained from casting in one piece' also said resistance may be disassembled'from thevma-Y 70 chine by only-disengaging saidV plugs. rlfhis kind of asambi'grwnsents the easyrand quiclcsubstituticn of,. th.eY

alone, with-a supporting arm 2 prolonged upwards in the rear` part, and therein made taperedj .inl order to partly n"surroldind theb`oiler' 3, whiclrin its body' portion is partially'bound on it`s sides by two` projecting elements The-boiler "3' lie's' onan electric resistance 4 disposed as a vplain spiral, the terminals of which 5 and 6 ,project downwards in order to be inserted into respectively provided ,connecting pins 7 gand, 8 Acooperating L' with ,la plug: 9, the body of which is made of dielectric and refractqny,i

stu, vfor example Vsteatite, and on which there areforeseen the screws l and 11 for the fastening of the electric conducting wires.

:Plug `9 is centrally held by `a mirror ,12,`c oneavelyV shaped, and provided within/0 narrow holes into which` enter .the collars 13 and 1140i Y,the plug Vbody 9, v v Said collarsnre foreseen to receivetheterminalsSland 6;,ot-

theresistance 4. A I

The protecting covering voffresistaricefl presents@ tr1 angular section with one face turned-upwardsthe:spires being disposed in such manner that their l facesin Vthe upper portion are -all on the same plane so as t o exactly adhere tothebottorn 15 of boiler 3. VIlrnordento.ensure inferiorrposition lean 4on a :V ,bent krod 16, the part con-A f annusare?H The `Spherical wps ,37 uand 38 are ,rigidly QQImeQtsd to each other by means of two parallel boltsv 39 and 40 (Figures l, 2, 3 and 5) andare held at a `distance from said bolts. On bolt 39 is hinged the end of a piston rod 41, whilst on bolt 40 there is hinged a piston rod 42. Piston rod 41 has its othereendgfastened on the hinge 43 of pistqn, whilst piston rod 4 2 khasitsenfl kfastened 011 z hinge-44, situatedeunder the ieupSfth'atformsthe 'ceiling stituting the summit of which is Isupported by `a step 17, vwhilst both-,the ends -are`rsupportedby steps 18, all being obtained-onthernirror12. Y

The mirror 12 leans on l-a reary spring 19, and on vr`two front `springs 20. Said springs are wound respectively portion of cylinder.

When the piston'is r in-its ripper most, position, piston rods 41 42`are positioned side byfside. Lever 34, on actuation, to the joined vr'nerrrb'ers'V37, v38 a .l .i COmPODDd, ,rotary and linearV progressive movement in the planepositiongof Ythe spires their summits in ftheir the downward direction, so that piston rod 41 exerts a downward drected-`force on piston 33 proportional to the force acting on lever.34. The iinal position of cups 37 and 38, of the piston rod 41 and 'of the piston 33 is shownin,dottedlineslinFigures 1 and'2.

laround bolts 19 and 20', that are opportunely sustained -V by .fthe foot part,` wherein they are regulatedfby means` of screws respectively 19" and 20". The throwing `actionof said springs on the borders of the mirror is such as -to ensure the adherence of the resistance4 to the bottom 15 of boiler 3. Y

.In the rear highest portion of varm 2 there-is foreseen a-collar -22 into which penetrates a pivot 21, screwed in said collar and providedwith a pin that takesits location=in a cavity 23 vdisposed 'on the boiler. Said kpivot can begscrewed orunscrewed in respect .with `the bushing Z1' provided lwith lateral knurling. The screwing .of' pivot -llvallows the-centering of boiler 3, -and cooperates in ;the fixation of the boiler to the footpart of themachine. In the front part, the-boiler is held byl.va,half ring 24.*(Figures V1, ..3 and 6) kprovided with two knurled holding yorgans 25 and 26 laterally disposed, and `with' V`The upper or ceiling portionof cylinder31is constitutedby .a cup 45 .that is bayonet engaged within the inner portion of said cylinder or engagedin such manner as to resist to the throwonto it, asexerted by the lpiston rod 42 when the lever 34v..is controlled. A bottom plate 46fbears thehinge 44. The cup bo'ttorn'45lis bored, and provided with asmallhandle 47 presenting anaxial bore through which'abolt -48 passes, ythesame being connected tothe metalsheet 49 of the cover 50 of boiler HThe upper endV of -said smallhand1e 47 is reinforced, and besidesk this reinforcement 4the ends opportunely shaped of an elastic-blade 51 (Figures 1, y2f and 4) will act in order toensure the evenI closing of thecover ofvboilerf. To this end, the small rblade A51 is fastened 'to the .metal sheet49 by means off-a collarisupportedby said bolt 48 two extremity wedges'27 and 28, and an elastic blade i '24' as well, the last also of semifannular construction.

Wedges v27 and 28 are provided for enteringgrooves k29 provided rat the endsof projectingarms 2'. The yelastic blade ,24' isprovided foi-binding close 'thecylindenbody 31, whilst the lower portion of the half-ring 24 :leans ,on the step 305of said -cylinder-31^. Byuns'crewingrpivot 21 kand extracting the half-ring 24, ,-by-master`ing the bending closeof blade 24', the boiler 3 iswholly disen- Agz`1ged,and together with it also the cylinder 31 and all the organs that are connectedl toit, as shown in Figure 6.

The disengagement of boiler and of the-other organs allows the direct accessibility to the electric resistance 4, which in this manner-can easily be disengaged from `its seating bytaking away the pins 7 and 8 fromtheir loca-` tion in plug 9.

`Step 30 on thecylinder is foreseen for thenecessary enlarging Vportion in order to permit therbayonet fitting for the flltencup that-is provided for receiving the ,powderedco'lee, Said Iiltercupbeingheld by biasedplanes 32.

The cylinder mantle 31 is anlintegral part ofg-boiler 3g, and said. cylinder .communicates with said boiler by means otholes 3' that are opened Vwhen .the piston is raised, to permit hot water to till the cylinders'pace in order tobe 4expelled by theactionrofsaid piston 3,3

during its downward'stroke. Y

Piston 33ris controlled by a lever 34 constituted .by twoarms that on one side are connected to ahandle` 3S (Figure3), and on the other sideengagethrough square bolts respective seatings -of square ytransversal cut 36 providedin Vthe :spherical cups 37 .and 38. In the inner portion of handle `35 takes place an elastic bladIeHZgS' 4the ends of which engage the ends of the lever arms 34, that'f'present elastic 'packings 34 .and `34" inr order to facilitate the opening of Vsaid leverarms '134 with-the vie'w to disengage the-.square bolts of the lastfffromithe seatings 36, in ithe mannerl shown by fdottedflinesinfFig# Ulf f itself. Onsaidsmallfhandle 47`th'ere is 'foreseen underneath saidbladeSl la shaft V52 the ends of 'whichenter appropriate.holes'made` on the lateral walls' of the cover Sti, whilst anend projects outwards-iiiordei-to bear fa small lever-53. VCorresponding tosaid small Vhandle 47, shaft 52 is providedY with a bending that interferes dur' ing the movement'u'pwards vof -small handle 53 with the small handle 47 thtcv'onstitutes a'fulcr'um, so 'constraining in upwards vmover'nent the ends of said shaft, and thereforelcau'sesthe raisingupfof the cover by mastering the strength that fastens the sr'nall blade 51, thus obtain# ing lthe disengagement of Vthe cover, Vwhichthus can be rotated varound bolt 48, as `shown in dotted lines in' Figure 4.

In Figurel there is shown also in dotted lines the raised up position of the cover after the disengagen'ieiitV ofthe small lblade'51. The Yrotation of thev cover 50 allowsV the accessibility of the internal part of boiler v3, andthe according operation is'very quick, as stated v.hereinabove, so facilitating the immission and changing of ing Vdrawings-is not-limitative ofthe invention, thesame f The takingaway o'f the cover 450 permits =the accessibility tothe internal organs of theeylinder, bydisengagr ing through asimplerotationvthe cup'45 andby-raising it inupwards movements'sas to draw'to'gether'with it' the Apiston rods `41 Va1'1dw 12, the Icups 37 and 38 and the piston 33 itself, as shown infFigure 5.' YThe taking away of these organs is possible-after previous disengagement of they lever arms 34, in the aforesaid' manner.

vOf course Ythe A.hereinabove .described coffee! infsion preparing machine, as also illustrated inthe accompanybeing such as can bei embodiedin different `other man# ners. Furthermore, said machine eanfbe-mfectured so as to comprise more groups for the compression of the hot water through the v-colee powder, so that a larger coffee infusion preparing machine is `obtained for bars, coffee houses and the like public locals. One large water boiler may be provided fo'r and connected tota plurality of coiee infusion devices according to the present invention, or one hot water collector may be arranged to feed a number of coffee infusion devices.

What I claim is:

1. In a pressure infusion machine, a combined water container and infusion pump unit comprising a housing forming a water container and an upright pump cylinder open at the top and having a bottom discharge end as well as passage means whereby said container communicates with said pump cylinder and having apertures in the cylinder wall accessible from the outside of said housing; a common cover member `for said combined water container and pump cylinder; means removably securing said co'mmon cover member to said housing; a pump unit comprising a closure member for the top end of said pump cylinder, means forremovably securing said closure member to said pump cylinder, a pump piston slidable in the lower portion of said cylinder, piston actuating means mounted in the upper portion of said cylinder o'peratively interconnecting said closure member and said `piston and operable so as to be extendable and retractable to eiect reciprocation of said piston and so that upon removal of said common cover member the pump unit can be removed from said cylinder together with said closure member; and operating means for said pump unit having portions adapted to' extend through said aperturesin the cylinder wall and engage said piston actuating means of the pump unit for actuating said piston, said operating means being detachable from said pump unit wheneverdesired.

2. In a pressure infusion machine, a combined water container and infusion pump unit comprising a housing forming a water container and an upright pump cylinder open at the to'p and having a bottomdischarge end as well as passage means whereby said container communicates with said pump cylinder and having apertures in the cylinder wall accessible from the outside of said housing; a pump unit comprising a closure member for the top end of said pump cylinder, means for removably securing said closure member to said pump cylinder, a pump piston slidable in the lower portio'n of said cylinder, a circular member disposed in the upper portion of said cylinder with its axis transversal to the axis of the cylinder for movement in said cylinder while guided therein against lateral displacement, first eccentric pivot means provided on said circular memben'a iirst link having one end connected to said circular member turnable about said first pivot means and the o'pposite end pivotally connected to said closure member of the cylinder, second eccentric pivot means provided on said circular member substantially opposite to said first pivot means, a second link having one end connected to said circular member turnable about said second pivot means and the opposite end pivotally connected to said piston, so that rotation of said circular member in respective opposite directions will reciprocate the piston, and so that the pump unit can be removed from said cylinder together with said closure member; and operating means for said pump unit having portions adapted to extend through said apertures in the.

cylinder Wall and engage said piston actuating means of the pump unit for actuating said piston, said operating means being detachable from said'purnp unit whenever desired. i

3. In a pressure infusion machine, a combined water container and infusion pump unit comprising a housing forming a water container and an upright pump cylinder open at the top and'having a bottom discharge end as well as passage means whereby said containerY communicates with said pump cylinder and having apertures in the cylinder wall accessible `fromthe outside of saidrhousing; -a pump unit comprising a closure member for the,

circular members turnable kabout said first pivot member andthe opposite end pivotally connected to said closurev member of the cylinder, a second eccentric pivot member interconnectingsaid circular members'opposite to said first pivot member, a second link having one end between said circular members turnable about said second pivot member and the opposite end pivotally connectedto said piston, so that rotation of -said circular members in respective opposite directions will reciprocate the piston,

and so that the pump unit can be removed from said cylinder together with said closure member; and operating means for said pump unit having portions adapted to extend through said apertures in the cylinder wall and engage said piston'actuating means of the pump unit for actuating said piston, said operating means being detach-V able from said pump unit whenever desired.

4. In a pressure infusion machine, a combined water container and infusion pump unit comprising a housing forming a water container and an upright pump cylinder open at the top and having a bottom discharge end as well as passage means whereby said container communicates with sai-d pump cylinder and having a pair of oppositely disposed apertures in the cylinder wall accessible from the outside of said housing; a pump Vunitcomprising va closure member for the top end of said pump cylinder, means for removably securing said closure membfer to said pump cylinder, a pump piston slidable in the lower portion of said cylinder, a pair of substantially identical concentric circular members spaced a predetermined distance from each other disposed in the upper portion of said cylinder with their axis transversal to the axis of the cylinder for movement therein while guided against lateral displacement, a first eccentric pivot member interconnecting said circular member, a first link having one end between said circular members turnable about said first pivot member and the opposite end pivotally connected to said closure member of the cylinder, a second eccentric pivot member interconnecting said circular members opposite to said rst pivot member, a second link having one end between said circular members turnable about said second pivot member and the opposite end pivotally connected to said piston, so that rotation ofA said circular members in respective opposite directions will reciprocate the piston, and so that the pump unit can be removed from said cylinder together with said closure member; and a U-shaped operating member for said pump unit having a pair of shanks resiliently deectible from one another with terminal portions adapted to extend through respective opposite apertures in the cylinder wall when sprung into engagement each with one of said circular members so that oscillating said operating mem ber will rotate said circular members and thereby actuate the pump unit, said shanks being deectible away from each other to elfect their release from said circular members ofthe pump unit and from said cylinder.

5. In a pressure infusion machine, a combined Water container and infusion pump unit comprising a housing forming a water container and an upright pump cylinder open at the top and having a bottom discharge end asl well as passage means ,whereby said container communicates with said pump cylinder and having apertures in the cylinder wall accessiblevfrom the outside of said housing; a common cover member vfor saidcombined water container and pump cylinder; a pump unit comprisinder, Vmeans for removably securing said closuremeinl'` ber to -saidfpump cylinder, a vpump'pist'onfslidable initl'ie lowe'r portiony of said cylinder, piston actuating 'means mounted in the upper portion offsaid cylinder operatively interconnecting said -clo'sure member and said piston and operable so as'to be extendable 'and retractable to effect reciprocation of said piston and yso that upon `removal of said common cover -member'fthe pump unit can ber'emoved from said cylinder'togcther with said closure member; operating means for said pump unit having portions adapted to extend -through said apertures inthe 'cylinder wall and eng-age said piston actuating means of the-pnnfip unitfor Aactuating said piston, said operatingmeans -being detachable from said pump Vunitvvhenever desired; and pivot means forpivotally mounting said common cover member on'said closure member of the cylinder so arranged that said cover member can be lifted from its closing position on said housing coaxially withfsaid pivot means to clear said housing and thereupon to be swung about said pivot means to provide access to said container.

6. ln a pressure infusion machine, a combined water container and infusion pump unit comprising la housing forming a water container and an upright pumpfcylindei' open at the top and having a bottom discharge end s Wellaspass'age means whereby said conta-incr 'communicates with said pump cylinder and having apertures iii the cylinder wall accessible from the outside of said housing; a common cover member for said combined water container and pump cylinder; a pump unit comprising ay closure member for the top end of said pump cylinder, means for removably vsecuring said-closure nieriberto said pump cylinder, a pump piston slidable inthe lower portion of 'said cylinder, piston actuating means mounted in the upper portion -of said cylinder operatively interconnecting -said lclosure member and said Vpiston and operablevso as to be eXtendableand retractable to effect reciprocation of said piston and so that upon removal of said Common cover member the pump unit can be removed from said cylinder together with said closure membersgvperat'irnfg means I:for sai-t1Y fputnp mit Having" port'onsvadapted to extend through s'id apertures in thecylinderrwall 'andengage the pump unit therein for actuating the same, vsaidope'rating Ar'nemberlbeing detachable` from said pump unit whenever desired; pivot means for pivotally mountingy said common coverV member on said closure member ofthe cylinder so 'arranged that said cover member can be lifted from its closing position on the housing coaxially with said pivot means to clear said housing .andfthereupon'be swung about said pivot means to provide access to said container; and lresilient gripping means-provided in the region ofsaid pivot means yeiective-to-retain Ysaid covermember in closing position upon saidhousing andarrangedso as to allow the cover member to be lifted from its closing position overcoming the resistance 'ofv said gripping means thereby releasing said cover member for turning 'movement about said pivot means.

YReferences Cited inthe ileof this patent UNITED STATES PATENTS 41,974 Class et al. i Mar. ;22, 1864 v 176,417 Armstrong Apr. 25, 1876 711,144 Wright l 0ct.j14, 1902 1,499,007 Edwards June 24, 1924 1,821,218 Hobart Sept. 1, 1931 2,026,234 yKnurtila Dec. 31, 1935 ,2,091,499 Brown Aug. 31, 1937 2,581,343I Ames Ian. 8, 1952 ,2,564,495 Wehrli Dec. 29, 1953 2,678,379 Fry` May 11, 1954 2,631,622 Trims 'June 22, 1954 2,691,717 Huck Oct. 12, 1954 2,798,423 Klausner July 9, 1957 Y FOREIGN PATENTS 1,085,498 France July 28, 1954 718,965 Great Britain Nov. `24, 1954 726,272 Great Brita-in Mar. 16, 1955 

